Ron Ananian, The Car Doctor discusses how modern vehicles, specifically a 2020 Lexus ES 350, require more complex procedures when replacing a battery. And sometimes the customer has a hand in it, even if by accident.  After replacing the battery in this Lexus, the car developed multiple warning lights, including check engine, ABS, and traction control. Diagnosis revealed fuel trim imbalances, with a significant discrepancy between bank one (-35%) and bank two (+35%).

Upon further investigation, the issue was traced to bad fuel from a low-cost gas station. The fuel appeared murky and contained unexpected ethanol content, causing performance issues. The host emphasizes the importance of buying quality fuel from reputable stations to avoid similar problems.

Key takeaways:
Battery replacement is no longer straightforward—many vehicles require a reset procedure to avoid electronic malfunctions.
Fuel quality matters—cheap fuel can lead to engine issues, especially in modern cars with complex fuel injection systems.
Regular diagnostics are crucial—understanding baseline performance metrics can help identify problems early.

The segment concludes with a listener call regarding a 2014 GMC Sierra experiencing intermittent starting issues. The host suggests checking fuel trim data and vehicle grounds, emphasizing how voltage-sensitive modern vehicles can be.

The overarching theme: Cars are becoming more technologically complex, making proper diagnostics and quality maintenance more critical than ever. 
Find out more about us at www.cardoctorshow.com 
Follow Us On Instagram  -   @ronananian   
Visit our You Tube Channel for auto repair tips and videos 
Call Into The Car Doctor Hotline 24/7 (855)560-9900   
Live Call In Show Saturdays 2-4PM Eastern Time 

 

Ron Ananian, The Car Doctor&nbsp;discusses how modern vehicles, specifically a 2020 Lexus ES 350, require more complex procedures when replacing a battery. And sometimes the customer has a hand in it, even if by accident.&nbsp; After replacing the battery in this Lexus, the car developed multiple warning lights, including check engine, ABS, and traction control. Diagnosis revealed fuel trim imbalances, with a significant discrepancy between bank one (-35%) and bank two (+35%).
Upon further investigation, the issue was traced to bad fuel from a low-cost gas station. The fuel appeared murky and contained unexpected ethanol content, causing performance issues. The host emphasizes the importance of buying quality fuel from reputable stations to avoid similar problems.
Key takeaways:
<ol>
<li>Battery replacement is no longer straightforward&mdash;many vehicles require a reset procedure to avoid electronic malfunctions.</li>
<li>Fuel quality matters&mdash;cheap fuel can lead to engine issues, especially in modern cars with complex fuel injection systems.</li>
<li>Regular diagnostics are crucial&mdash;understanding baseline performance metrics can help identify problems early.</li>
</ol>
The segment concludes with a listener call regarding a 2014 GMC Sierra experiencing intermittent starting issues. The host suggests checking fuel trim data and vehicle grounds, emphasizing how voltage-sensitive modern vehicles can be.
The overarching theme: Cars are becoming more technologically complex, making proper diagnostics and quality maintenance more critical than ever.&nbsp;
<ul>
<li>Find out more about us at&nbsp;<a href="http://www.cardoctorshow.com">www.cardoctorshow.com</a>&nbsp;</li>
<li>Follow Us On Instagram&nbsp; -&nbsp; &nbsp;@ronananian&nbsp; &nbsp;</li>
<li>Visit our You Tube Channel for auto repair tips and videos&nbsp;</li>
<li>Call Into The Car Doctor Hotline 24/7 (855)560-9900&nbsp; &nbsp;</li>
<li>Live Call In Show Saturdays 2-4PM Eastern Time&nbsp;</li>
</ul>
&nbsp;

With over 40 years of repairing cars and 27 on the radio helping you repair them, Ron Ananian, The Car Doctor, is an expert at everything automotive. Call us at 855-560-9900.

With over 40 years of repairing cars and 27 on the radio helping you repair them, Ron Ananian, The Car Doctor, is an expert at everything automotive.  Call us at 855-560-9900.

Ron Ananian The Car Doctor

Ron Ananian, The Car Doctor, is a nationally recognized automotive expert, master technician, and trusted voice in car repair and consumer advice. For more than 30 years, Ron has blended real-world shop experience with straight-talk radio, helping drivers understand their vehicles and the industry with clarity, humor, and honesty. As host of the long-running Ron Ananian, The Car Doctor radio show—heard nationwide across major networks—he brings diagnostics, storytelling, and practical wisdom together in a way only a seasoned mechanic can. Whether it’s a tough trouble code, a buying decision, or a behind-the-scenes look at shop life, Ron delivers the insight listeners rely on.

Ron Ananian, The Car Doctor, is a nationally recognized automotive expert, master technician, and trusted voice in car repair and consumer advice. For more than 30 years, Ron has blended real-world shop experience with straight-talk radio, helping drivers understand their vehicles and the industry with clarity, humor, and honesty. As host of the long-running Ron Ananian, The Car Doctor radio show&mdash;heard nationwide across major networks&mdash;he brings diagnostics, storytelling, and practical wisdom together in a way only a seasoned mechanic can. Whether it&rsquo;s a tough trouble code, a buying decision, or a behind-the-scenes look at shop life, Ron delivers the insight listeners rely on.

Ron Ananian The Car Doctor™

Ron Ananian, The Car Doctor - February 8, 2025 - Hour 1 - 1989 Camaro Tach Reading Error - (855)560-9900 24/7 Hotline

https://api.omny.fm/orgs/e73c998e-6e60-432f-8610-ae210140c5b1/clips/e66989a3-bc2f-46c3-abcb-b27e015beacb/transcript

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